Design Standard for Energy Efficiency of Residential Buildings in Xi’an


This standard is edited by China Northwest Architecture design and research institute, Xi’an Green Building Science and Technology Research Association and Xi’an Housing and Urban-rural Construction Bureau.  “Design Standard for Energy Efficiency of Residential Buildings in Xi’an” has been approved by the Shaanxi Provincial Department of Housing and Urban-Rural Development and the Shaanxi Provincial Market Supervision Administration to organize relevant departments and experts, and is now promulgated as the Shaanxi Provincial Construction Standards. The standard, numbered DBJ/61-164-2019, which will be implemented from May 1st, 2020, which means the energy conservation standard has been further improved in this area. The standard will be to increase the energy efficiency for residential buildings from 65% to 75% in Xi’an and the heat transfer coefficient value of external windows is limited to less than 2.2 W/m2・K.